Hiroshima Orizuru Tower

This guide to Hiroshima Orizuru Tower opens with a disagreement nobody can settle: how many paper cranes actually fill the glass wall beside you. It traces the building's own reinvention, from an ordinary insurance office built in 1978 near the ruined Atomic Bomb Dome to the day in 2010 a Mazda executive named Tetsuya Matsuda bought it purely for its rooftop view. You'll hear how architect Hiroshi Sambuichi kept the old steel frame and threaded a spiral ramp through it rather than tearing the tower down. Fold your own crane before you go, and add it to a count that still won't settle.